EP0259755A1 - Boulon d'ancrage de roche - Google Patents

Boulon d'ancrage de roche Download PDF

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Publication number
EP0259755A1
EP0259755A1 EP87112726A EP87112726A EP0259755A1 EP 0259755 A1 EP0259755 A1 EP 0259755A1 EP 87112726 A EP87112726 A EP 87112726A EP 87112726 A EP87112726 A EP 87112726A EP 0259755 A1 EP0259755 A1 EP 0259755A1
Authority
EP
European Patent Office
Prior art keywords
drill bit
base body
bores
rock anchor
boring bar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87112726A
Other languages
German (de)
English (en)
Other versions
EP0259755B1 (fr
Inventor
Heinz Gruber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GD-ANKER GmbH
Original Assignee
GD-ANKER GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GD-ANKER GmbH filed Critical GD-ANKER GmbH
Priority to AT87112726T priority Critical patent/ATE66719T1/de
Publication of EP0259755A1 publication Critical patent/EP0259755A1/fr
Application granted granted Critical
Publication of EP0259755B1 publication Critical patent/EP0259755B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00—Setting anchoring-bolts
    • E21D20/02—Setting anchoring-bolts with provisions for grouting
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E21D21/0053—Anchoring-bolts in the form of lost drilling rods

Definitions

  • the invention relates to a rock bolt according to the preambles of claims 1 and 5.
  • a drill for dry drilling to be used at the same time as a rock anchor is known, the boring bar of which is provided with a central longitudinal bore from which cross bores are branched, in a uniform distribution over its entire length.
  • the axes of the bores extend from the longitudinal bore mentioned at angles to a cross-sectional plane in the direction of the bottom of the borehole.
  • the outside of the boring bar is provided with a helical surface structure, which is formed by a welded or soldered wire or the like, for example forged beads.
  • the above-mentioned cross holes serve to suck up rock dust, which is developed during a drilling phase in the area of a drill bit and is discharged via the central longitudinal hole.
  • the known boring bars which can also be used as rock anchors, have defects which affect Introducing the cement mortar into the borehole, especially regarding the even distribution of the mortar filling.
  • the latter in turn depends on the quality of the composite effect that can be achieved by setting the rock anchors between the different rock or rock formations, the position of which is to be stabilized.
  • the object of the invention to design a rock bolt which, while being usable as a boring bar, enables simple mortaring in a simple and economical manner with the rock that delimits the borehole, in particular a uniform mortar distribution in the borehole.
  • This object is achieved in a generic rock anchor by the features of the characterizing part of claim 1.
  • the rock anchor is only provided with outlet openings in its front region, ie the region adjacent to the drill bit. These are the openings in the circumferential area of the boring bar on the one hand and the central flushing bore of the drill bit on the other.
  • the subject matter of the invention is used as a rock anchor, through the interior of which anchor mortar is pressed into the borehole.
  • This anchor mortar emerges mainly through the circumferential holes in the front area of the rock anchor.
  • the advantageous effects achieved by the arrangement according to the invention of the holes located in the front region of the rock anchor essentially consist in the fact that the borehole is always filled with mortar starting from the bottom of the borehole - progressing towards the mouth of the borehole - which during the backflow along the outside of the drill rod also fills the cavities of the surrounding mountains in the area of the borehole wall.
  • the mortar must therefore be present at the outlet of the bores mentioned with a pressure which is sufficient to overcome the flow resistances present on the return flow path along the outside of the boring bar.
  • the front area of the boring bar within which the bores mentioned are arranged in a uniform distribution, is to be understood here as an area that extends from the drill bit over a distance of at most 20 cm. This results in a mechanically very simple construction of the rock bolt, which can also be used as a boring bar, and which can be lengthened for longer bores in a manner known per se with the interposition of extension pieces.
  • the plate-like design of the drill bit also ensures that the rock bolt is held in the borehole during injection.
  • the features of claim 4 ensure that the flow velocity within the tubular base body practically corresponds to that in the bores in the front region of the boring bar. In this way, the pressure loss when flowing through the boring bar is kept low and thus the energy expenditure for the conveyance of rinsing liquid and anchor mortar is favorably influenced.
  • the cross-sectional equality of the inner cross section of the tubular base body can exist either only with the bores of the boring bar, but in principle also with all bores in the front area thereof, i.e. including the central flushing hole of the drill bit.
  • the task described at the outset is also achieved in a generic rock anchor by the features of the characterizing part of claim 5.
  • the base body is also formed here by a thick-walled tube provided with bores in the circumferential area, at one end of which there is a drilling tool and at the other end of which there is a threaded section which is the coupling a drive unit for the drilling process or coupling sleeves for extension rods.
  • the tube which is attached within the tubular base body at a distance from its inner walls is used to guide a rinsing liquid which is used in the area of the drilling tool or the drill bit.
  • the said pipe also serves at the same time to convey an anchor mortar suspension, which has to be introduced under pressure into the mountain space delimiting the borehole.
  • the outlet opening of the said tube is located at a short distance from the axial flushing bore of the drill bit.
  • the substances introduced initially emerge via the flushing hole in the drill bit and fill the surrounding mountain area.
  • the said pipe is arranged in the base body at a distance from the drill bit, the mortar suspension flows back inside the base body as soon as the cavity determining the head part of the borehole is largely filled.
  • This backflow of the mortar suspension has the result that - starting with the holes arranged adjacent to the drill bit in the casing of the base body, the mortar suspension increasingly also emerges laterally until finally the entire cavity which can be defined by the borehole is filled.
  • the main idea of the invention is based on the fact that, in a first phase of the mortar application, this predominantly or exclusively in the area of the drilling tool, for example via the rinsing holes, and that in a second phase the mortar suspension emerges via the holes in the casing of the base body, starting at the beginning with the area adjacent to the drill bit and progressing up to the threaded section.
  • the outlet opening of the pipe arranged inside the base body must be spatially arranged and dimensioned with respect to the drilling holes in the drill bit so that the mortar suspension emerging from the pipe is mainly carried into the drilling holes.
  • the flushing liquid carried in the pipe mentioned like in conventional boring bars, mainly exits via the flushing holes in the area of the drill head, exerts a cooling effect and at the same time absorbs the cuttings developed during the drilling process and on the outside of the base body washed away.
  • the features of claim 7 have the advantage that after the process of introducing anchor mortar has ended, the said tube functions practically as a check valve, by means of which mortar is prevented from escaping from the base body.
  • the tube can be made of a suitable plastic, but in principle a metal can be used.
  • the round thread preferably used here, on the other hand, brings an improvement during the use of the subject matter of the invention as a rock anchor tion of the bond between the hardening cement mortar on the one hand and the boring bar on the other. In any case, this is a relatively coarse thread, which should be produced without cutting, for example by rolling, rolling or the like, taking into account the strength of the boring bar - starting from a tubular base body.
  • claims 11 and 12 have the advantage that during the drilling process the holes made in the casing of the base body cannot become clogged with the washed-out cuttings.
  • Fig. 1 in Fig. 1 denotes a boring bar, at one end of which there is a drill bit 2.
  • the drill bit 2 is welded to the boring bar 1.
  • the boring bar 1 is provided on the outside over its entire length with an approximate round thread 3 which, starting from the tubular base body of the boring bar 1, is preferably produced by non-cutting shaping, namely by rolling or rolling.
  • a central axial bore 4 runs inside the boring bar 1, which is continued within the drill bit 2 in a likewise axially extending flushing bore 5.
  • the bore 4 has an inside diameter of preferably at least 15 mm.
  • the bores 6 are moreover evenly distributed over the circumference of the boring bar 1, the above-mentioned front area of the boring bar being understood to mean an area which, starting from the drill bit 2, extends over a length of preferably at most 20 cm.
  • the bores and the flushing bore 5 are dimensioned such that the sum of their flow cross-sections corresponds approximately to the flow cross-section of the axial bore 4.
  • the round thread 3 is used in a manner known per se for coupling a hammer drill or other drive unit for the boring bar 1 and can be extended with the interposition of corresponding sleeves, not shown in the drawing, preferably using such boring bars, which are also on the outside over their entire length Length a Wear round thread 3 corresponding thread.
  • the drill bit 2 shown enlarged in different views in FIGS. 2 and 3, consists of a plate-like base body 7 which, in the exemplary embodiment shown here, has an approximately square shape, but the sides of which are provided with indentations 8 in the form of circular sections. These indentations 8 are otherwise dimensioned such that their deepest points just touch an outer circle circumscribing the round thread 3. The importance of this training will be discussed in more detail below.
  • the base body 7 carries on its outside, i.e. on the side facing the respective borehole bottom, a star-shaped arrangement of prism-like projections 9, the edges 10 of which extend in the direction of the corners of the square base body 7 and form cutting edges for the drilling process.
  • These projections 9 are formed around the lateral boundary edges of the base body and end at a short distance from the point at which the boring bar 1 is welded on.
  • the cutting edges that can be defined in this way are therefore effective not only in the end area but also in the peripheral area.
  • the edges 10 end in the central region of the base body in beveled surfaces 11 which are inclined in the direction of the mouth opening of the flushing bore 5.
  • drill bit 2 in particular the base body 7, with regard to its axial, i.e. extending in the direction of arrows 12 as short as possible.
  • This device is initially used like a boring bar, i.e.
  • a drive unit is coupled to the round thread 3, a flushing liquid being pumped through the axial bore 4 during drilling.
  • the cuttings developed in the area of the drill bit 2 are taken up via the liquid stream emerging from the flushing bore 5 and conveyed out of the borehole on the outside of the drill rod 1. Since the drill bit 2, which has a larger outer diameter than the drill rod 1, is provided on the circumference with indentations 8, a slight wash-off of the developed cuttings into the areas behind the drill bit 2 is made possible.
  • the small axial length of the drill bit 2 also contributes to the flow-guiding of this suspension containing the cuttings.
  • the above-mentioned cross-sectional dimensioning of the bores 6 in connection with the rinsing bore 5 also ensures a uniform flow of the rinsing agent. Since the axes of the bores 6 are directed rearward, i.e. away from the drill bit, the flow of flushing agent which emerges here supports the washing away of the cuttings in the direction of the hole opening. Due to the round thread 3 extending over the entire length of the boring bar 1, there is also a conveying effect on the cuttings, whereby larger particles in particular are reliably detected and the formation of blockages is counteracted.
  • FIG. 3 in FIG. 3 is the boring bar of a further exemplary embodiment, at one end of which there is a drill bit 14.
  • the drill bit 14 can be welded, screwed or directly pressed onto the boring bar 13.
  • the end of the drill rod 13 facing away from the drill bit 14 is provided on the outside with a coarse left-handed round thread 15, via which a rotary hammer or another drive unit for the drill rod 13 can be coupled in a manner known per se. With the interposition of corresponding sleeves (not shown in the drawing), further boring bars 13 can also be connected via the round thread 15 for the purpose of extension.
  • the drill bit 14 is provided in a manner known per se with a central bore 16, which is used to guide rinsing liquid.
  • the bore 16 merges into the drill rod 13 on the inside of the drill bit 14 via a funnel-like extension 17.
  • the clamping piece 18 which is inserted into the drill rod 13, for example screwed.
  • the clamping piece 18, which is made of metal, for example, is used to fix a tube 20, which extends coaxially to the interior 19 in the boring bar 13 and whose outlet opening is arranged in the region of the funnel-like extension 17 of the drill bit 14.
  • the tube 20 can consist of a rigid plastic, but also of metal, and is dimensioned such that it takes up about a quarter to a half of the cross-sectional area of the interior of the drill rod 13.
  • the tube 20 is inserted sealingly in the clamping piece 18, the connection between the clamping piece 18 and the inner wall of the boring bar 13 also being designed to be sealing.
  • the clear cross section of the tube 20 is smaller than that of the bore 16.
  • FIG. 5 In which 22, 23 denote the projections of the axes of two bores 21 (FIG. 4) and 24 the direction of rotation of the boring bar 13 during the boring process.
  • the device explained with reference to FIGS. 4 and 5 represents a boring bar with a drill bit and at the same time a rock bolt. Its practical handling is described below briefly explained:
  • the device is initially used like a boring bar, i.e. A rotary hammer or other drive unit is coupled via the round thread 15, with rinsing liquid being pumped during the drilling through the central tube 20, which receives the locally developed drilling cuttings via the bore 16 in the drill bit 14 and on the outside of the boring bar 13 from the borehole promoted out.
  • the mouth of the tube 20 in the area of the drill bit 14 is arranged such that the flushing liquid escaping is pressed directly through the drill bit at high pressure and only a small proportion remains in the interior 19.
  • This guidance of the rinsing liquid is achieved by a small distance between the mouth of the tube 20 and the bore 16 on the one hand and by the cross-sectional dimensions of the tube 20 on the one hand and the bore 16 on the other hand. Due to the above-described angular orientations of the bores 21, both in radial and in axial planes, it is prevented that cuttings get stuck in these bores 21 during the boring process and possibly penetrate into the interior 19.
  • the above-mentioned drive unit or the hammer drill is separated from the round thread by reversing the direction of rotation and is then screwed over the pipe 20 after screwing on a corresponding coupling piece high pressure an anchor mortar suspension introduced into the boring bar 13.
  • This suspension emerges in the area of extension 17 Tube 20 and passes through the bore 16 of the drill bit 14 into the surrounding mountain area, which is completely filled.
  • the suspension flows in the interior 19 surrounding the tube 20 in a ring-like manner and passes through the bores 21, starting with the foremost in the axial direction , ie the drill bit 14 closest holes 21 also from.
  • the entire mountain area surrounding the drill rod 13 is continuously filled in this way by the suspension flowing further backward in the interior mentioned, so that the entire length of the drill rod is finally embedded in the suspension mentioned.
  • this acts as a non-return valve, in particular when the tube 20 is made of an elastic material, for example plastic, which prevents the suspension from flowing out to the rear.
  • the round thread 15 now protruding from the borehole can then be braced against the rock by means of an anchor plate (not shown in the drawing) and a screwed-on nut after the mortar has hardened.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Paleontology (AREA)
  • Piles And Underground Anchors (AREA)
  • Earth Drilling (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
EP87112726A 1986-09-10 1987-09-01 Boulon d'ancrage de roche Expired - Lifetime EP0259755B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87112726T ATE66719T1 (de) 1986-09-10 1987-09-01 Gebirgsanker.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3630832 1986-09-10
DE3630832 1986-09-10
DE3724165 1987-07-22
DE19873724165 DE3724165A1 (de) 1986-09-10 1987-07-22 Gebirgsanker

Publications (2)

Publication Number Publication Date
EP0259755A1 true EP0259755A1 (fr) 1988-03-16
EP0259755B1 EP0259755B1 (fr) 1991-08-28

Family

ID=25847383

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87112726A Expired - Lifetime EP0259755B1 (fr) 1986-09-10 1987-09-01 Boulon d'ancrage de roche

Country Status (8)

Country Link
US (1) US4946314A (fr)
EP (1) EP0259755B1 (fr)
JP (2) JPH01500680A (fr)
AU (1) AU598048B2 (fr)
CA (1) CA1295155C (fr)
DE (1) DE3724165A1 (fr)
ES (1) ES2023861B3 (fr)
WO (1) WO1988002058A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0329835A2 (fr) * 1988-02-26 1989-08-30 Friedr. Ischebeck GmbH Boulon autotaraudeuse pour ancrage par injection
EP0371463A2 (fr) * 1988-11-29 1990-06-06 Gd-Anker Gmbh Procédé pour mettre en place un ancrage et ancrage de forage d'injection de mise en oeuvre du procédé
GB2233056A (en) * 1989-05-25 1991-01-02 Ryan Mining Services Limited Rock bolt for mine roofs
EP0863261A1 (fr) * 1997-03-04 1998-09-09 Foresight Products, LLC Ancrage de sol et son procédé de réalisation
WO2007095690A1 (fr) * 2006-02-24 2007-08-30 Commonwealth Scientific And Industrial Research Organisation Adaptateur pour boulon de stabilisation, ecrou d'injection de coulis, ecrou d'injection de coulis et boulon de stabilisation combines et procede pour les utiliser
CN108868618A (zh) * 2018-08-03 2018-11-23 洛阳中岩工程材料有限公司 便于高效生产的铸造锚固钻头
CN111022095A (zh) * 2019-10-29 2020-04-17 中国矿业大学 一种防止巷道底鼓的支护结构及支护方法

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Publication number Priority date Publication date Assignee Title
WO1992001141A1 (fr) * 1990-07-03 1992-01-23 The Illawarra Technology Corporation Limited Cheville autoforeuse de soutenement de sol
AU652765B2 (en) * 1990-07-03 1994-09-08 Illawarra Technology Corporation Limited, The Drillable ground support bolt
US5433558A (en) * 1990-10-29 1995-07-18 Bhp Engineering Pty Ltd Self-tapping, and self-tapping and self-drilling, rock bolts
DE4128154C2 (de) * 1991-07-02 1994-06-16 Gd Anker Gmbh & Co Kg Injektionsrohr und Verfahren zum Setzen eines Gebirgsankers
AU650349B2 (en) * 1991-07-02 1994-06-16 Gd-Anker Gmbh Injection pipe and process for setting a rock anchor
DE4211334C1 (en) * 1992-01-21 1993-09-02 Gd-Anker Gmbh, 38723 Seesen, De Rock anchor for insertion in poorly cohesive rock - comprises bore anchor producing hole and stabilising hole walling and injection anchor inserted with hardenable medium
DE4201419C1 (en) * 1992-01-21 1993-08-19 Gd-Anker Gmbh, 3370 Seesen, De Rock anchor for location in rock with low cohesion factor - comprises outer bore anchor for making borehole and stabilising hole wall and injection anchor of hardenable material
ES2146618T3 (es) * 1992-09-25 2000-08-16 Bhp Eng Pty Ltd Barras huecas y procedimiento para su fabricacion.
CA2160379A1 (fr) * 1993-04-16 1994-10-27 Kieron Denz Appareil integre de forage et de boulonnage des roches
IT1290040B1 (it) * 1997-03-07 1998-10-19 Marcegaglia S P A Metodo per la stabilizzazione di ammassi rocciosi e relativo elemento stabilizzatore
AUPP955399A0 (en) * 1999-03-31 1999-04-29 Hydramatic Engineering Pty. Ltd. Method and apparatus for insertion of rockbolts
AUPR389101A0 (en) * 2001-03-22 2001-04-12 Celtite Pty Ltd Improvements in and relating to rock bolting
AT412361B (de) * 2002-09-03 2005-01-25 Hammer Rene Verfahren und vorrichtung zum sichern des gebirges und des ausbaus von stollen, tunnels u.dgl.
US20070269274A1 (en) * 2003-06-03 2007-11-22 Ross Seedsman Rock Bolt
BRPI0618483A2 (pt) * 2005-11-09 2011-08-30 Sandvik Intellectual Property parafuso auto-perfurador para rocha
DE102006000083A1 (de) 2006-02-20 2007-08-23 Hilti Ag Ankerbohrkopf
US20070286687A1 (en) * 2006-06-12 2007-12-13 Cesare Melegari Method and equipment for constructing micropiles in soil
DE102008014700A1 (de) * 2008-03-18 2009-09-24 Dywidag-Systems International Gmbh Korrosionsgeschützter Selbstbohranker sowie Verfahren zu dessen Herstellung
US8584777B2 (en) 2010-06-04 2013-11-19 Dover Bmcs Acquisition Corporation Rotational drill bits and drilling apparatuses including the same
US9109412B2 (en) 2010-06-04 2015-08-18 Dover Bmcs Acquisition Corporation Rotational drill bits and drilling apparatuses including the same
WO2011163449A1 (fr) 2010-06-24 2011-12-29 Nucor Steel Birmingham, Inc. Boulon d'armature fileté pouvant résister à la tension
US9080400B1 (en) 2010-11-24 2015-07-14 Dover Bmcs Acquisition Corporation Rotational drill bits and drilling apparatuses including the same
US9010165B2 (en) 2011-01-18 2015-04-21 Nucor Corporation Threaded rebar manufacturing process and system
GB2609017B (en) * 2021-07-16 2023-07-12 Hypertunnel Ip Ltd Integrated drilling injection and extraction device and method
CN114875888B (zh) * 2022-06-11 2024-06-18 一山(北京)岩土工程有限公司 微型钢管桩注浆加固装置及加固方法

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DE936082C (de) * 1954-01-02 1956-07-12 Wilhelm Weghuber Verfahren zum Verbinden von Gesteinsschichten im Bergbau und Mittel zur Ausuebung des Verfahrens
FR1193727A (fr) * 1954-01-02 1959-11-04 Veruschacht Vereinigte Unterta Tube perforé pour ancrage dans le terrain
US4055051A (en) * 1976-01-08 1977-10-25 The United States Of America As Represented By The Secretary Of The Interior Unitary drill bit and roof bolt
DE3400182A1 (de) * 1984-01-04 1985-07-11 Friedr. Ischebeck GmbH, 5828 Ennepetal Injektionsanker
GB2169050A (en) * 1984-12-15 1986-07-02 Dowty Group Services Anchor bolt and method of application thereof to associated structure

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JPS5457402A (en) * 1977-10-17 1979-05-09 Okabe Kk Bit for selffboring rock bolt
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DE3503012A1 (de) * 1985-01-30 1986-07-31 Dyckerhoff & Widmann AG, 8000 München Verspannvorrichtung fuer das zugglied eines ankers, insbesondere eines felsankers
CA1286129C (fr) * 1986-06-24 1991-07-16 Inco Limited Boulon d'ancrage dans le roc pris dans un materiau durci, et dispositif servant a son implantation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE936082C (de) * 1954-01-02 1956-07-12 Wilhelm Weghuber Verfahren zum Verbinden von Gesteinsschichten im Bergbau und Mittel zur Ausuebung des Verfahrens
FR1193727A (fr) * 1954-01-02 1959-11-04 Veruschacht Vereinigte Unterta Tube perforé pour ancrage dans le terrain
US4055051A (en) * 1976-01-08 1977-10-25 The United States Of America As Represented By The Secretary Of The Interior Unitary drill bit and roof bolt
DE3400182A1 (de) * 1984-01-04 1985-07-11 Friedr. Ischebeck GmbH, 5828 Ennepetal Injektionsanker
GB2169050A (en) * 1984-12-15 1986-07-02 Dowty Group Services Anchor bolt and method of application thereof to associated structure

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0329835A2 (fr) * 1988-02-26 1989-08-30 Friedr. Ischebeck GmbH Boulon autotaraudeuse pour ancrage par injection
EP0329835A3 (fr) * 1988-02-26 1991-03-06 Friedr. Ischebeck GmbH Boulon autotaraudeuse pour ancrage par injection
EP0371463A2 (fr) * 1988-11-29 1990-06-06 Gd-Anker Gmbh Procédé pour mettre en place un ancrage et ancrage de forage d'injection de mise en oeuvre du procédé
EP0371463A3 (fr) * 1988-11-29 1991-04-17 Gd-Anker Gmbh Procédé pour mettre en place un ancrage et ancrage de forage d'injection de mise en oeuvre du procédé
GB2233056A (en) * 1989-05-25 1991-01-02 Ryan Mining Services Limited Rock bolt for mine roofs
EP0863261A1 (fr) * 1997-03-04 1998-09-09 Foresight Products, LLC Ancrage de sol et son procédé de réalisation
WO2007095690A1 (fr) * 2006-02-24 2007-08-30 Commonwealth Scientific And Industrial Research Organisation Adaptateur pour boulon de stabilisation, ecrou d'injection de coulis, ecrou d'injection de coulis et boulon de stabilisation combines et procede pour les utiliser
CN108868618A (zh) * 2018-08-03 2018-11-23 洛阳中岩工程材料有限公司 便于高效生产的铸造锚固钻头
CN108868618B (zh) * 2018-08-03 2023-12-12 洛阳中岩工程材料有限公司 便于高效生产的铸造锚固钻头
CN111022095A (zh) * 2019-10-29 2020-04-17 中国矿业大学 一种防止巷道底鼓的支护结构及支护方法

Also Published As

Publication number Publication date
US4946314A (en) 1990-08-07
EP0259755B1 (fr) 1991-08-28
JPH01500680A (ja) 1989-03-09
AU8029487A (en) 1988-04-07
JPH072799Y2 (ja) 1995-01-25
WO1988002058A1 (fr) 1988-03-24
JPH0594400U (ja) 1993-12-24
ES2023861B3 (es) 1992-02-16
DE3724165C2 (fr) 1990-06-13
DE3724165A1 (de) 1988-03-24
CA1295155C (fr) 1992-02-04
AU598048B2 (en) 1990-06-14

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